Victron LiFePO4 Battery 12.8V/180Ah Smart - BAT512118610LiFePO4 Battery 12. 8V 180Ah Smart Why lithium iron phosphate? Lithium iron phosphate (LiFePO4 or LFP) is the safest of the mainstream li ion battery types. The nominal voltage of a LFP cell is 3,2V (lead acid: 2V cell). A 12,8V LFP battery therefore consists of 4 cells connected in series, and a 25,6V battery consists of 8 cells connected in series Size and weight Saves up to 70% in space Saves up to 70% in weight Expensive LFP batteries are